JP2023017952A - 通信システム、移動端末および基地局 - Google Patents
通信システム、移動端末および基地局 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0628—Diversity capabilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
- H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
- H04B7/06964—Re-selection of one or more beams after beam failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
本発明に係る移動端末は、移動端末と、ビームを用いて移動端末と無線通信を行う少なくとも1つの基地局と、を備える通信システムにおける移動端末であって、基地局から送信されたチャネル状態情報参照信号の通信品質を判断する。
本発明に係る基地局は、移動端末と、ビームを用いて移動端末と無線通信を行う少なくとも1つの基地局と、を備える通信システムにおける基地局であって、移動端末が通信品質を判断するために用いるチャネル状態情報参照信号を送信する。
図2は、3GPPにおいて議論されているLTE方式の通信システム200の全体的な構成を示すブロック図である。図2について説明する。無線アクセスネットワークは、E-UTRAN(Evolved Universal Terrestrial Radio Access Network)201と称される。通信端末装置である移動端末装置(以下「移動端末(User Equipment:UE)」という)202は、基地局装置(以下「基地局(E-UTRAN NodeB:eNB)」という)203と無線通信可能であり、無線通信で信号の送受信を行う。
実施の形態2は、例えば、通信状況の変化に応じて基本ビームを変更することによって通信を維持する技術に関し、さらには移動端末のビームの指定に関する。
実施の形態3は、例えば、他基地局に対する干渉対策に関する。
実施の形態4は、例えば、可逆性対応可否への対応に関する。
Claims (11)
- 移動端末と、ビームを用いて前記移動端末と無線通信を行う少なくとも1つの基地局と、を備える通信システムであって、
前記移動端末は、前記基地局から送信されたチャネル状態情報参照信号の通信品質を判断する、
通信システム。 - 前記移動端末は、前記通信品質を示すSN比と閾値との比較に基づいて前記通信品質を判断する、請求項1に記載の通信システム。
- 前記移動端末は、前記SN比が前記閾値以下であるか否かに基づいて前記通信品質を判断する、請求項2に記載の通信システム。
- 前記移動端末は、前記通信品質の判断結果に基づいてビーム消失通知を送信する、請求項1から3のいずれか1項に記載の通信システム。
- 前記基地局は、マスター基地局およびセカンダリ基地局を含み、
前記移動端末は、前記マスター基地局に、前記セカンダリ基地局と前記移動端末との通信に関する前記ビーム消失通知を送信する、請求項4に記載の通信システム。 - 前記マスター基地局は、前記セカンダリ基地局に、前記移動端末から受信した前記ビーム消失通知に対応する指示を送信する、請求項5に記載の通信システム。
- 前記移動端末は、物理上り共有チャネルまたは物理上り制御チャネルを用いて前記ビーム消失通知を送信する、請求項4に記載の通信システム。
- 前記移動端末は、ランダムアクセスを用いて前記ビーム消失通知を送信する、請求項4に記載の通信システム。
- 前記移動端末は、前記ビーム消失通知を送信した後にビーム再検出を開始する、請求項4に記載の通信システム。
- 移動端末と、ビームを用いて前記移動端末と無線通信を行う少なくとも1つの基地局と、を備える通信システムにおける前記移動端末であって、
前記基地局から送信されたチャネル状態情報参照信号の通信品質を判断する、
移動端末。 - 移動端末と、ビームを用いて前記移動端末と無線通信を行う少なくとも1つの基地局と、を備える通信システムにおける前記基地局であって、
前記移動端末が通信品質を判断するために用いるチャネル状態情報参照信号を送信する、
基地局。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2017053919 | 2017-03-21 | ||
JP2017053919 | 2017-03-21 | ||
PCT/JP2018/007132 WO2018173646A1 (ja) | 2017-03-21 | 2018-02-27 | 通信システム |
JP2019507475A JPWO2018173646A1 (ja) | 2017-03-21 | 2018-02-27 | 通信システム |
Related Parent Applications (1)
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JP2019507475A Division JPWO2018173646A1 (ja) | 2017-03-21 | 2018-02-27 | 通信システム |
Publications (2)
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JP2023017952A true JP2023017952A (ja) | 2023-02-07 |
JP7499822B2 JP7499822B2 (ja) | 2024-06-14 |
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JP2019507475A Pending JPWO2018173646A1 (ja) | 2017-03-21 | 2018-02-27 | 通信システム |
JP2022180092A Active JP7499822B2 (ja) | 2017-03-21 | 2022-11-10 | 通信システム、移動端末およびマスター基地局 |
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US (4) | US10785661B2 (ja) |
EP (2) | EP3605867A4 (ja) |
JP (2) | JPWO2018173646A1 (ja) |
CN (3) | CN116137545A (ja) |
WO (1) | WO2018173646A1 (ja) |
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2018
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- 2018-02-27 EP EP18770534.8A patent/EP3605867A4/en not_active Withdrawn
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- 2018-02-27 CN CN202310155307.8A patent/CN116137545A/zh active Pending
- 2018-02-27 EP EP23170358.8A patent/EP4236105A3/en active Pending
- 2018-02-27 CN CN201880017350.5A patent/CN110431758A/zh not_active Withdrawn
- 2018-02-27 CN CN202310166715.3A patent/CN116170045A/zh active Pending
- 2018-02-27 JP JP2019507475A patent/JPWO2018173646A1/ja active Pending
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US20200374708A1 (en) | 2020-11-26 |
US10785661B2 (en) | 2020-09-22 |
EP4236105A3 (en) | 2023-09-13 |
WO2018173646A1 (ja) | 2018-09-27 |
EP3605867A4 (en) | 2021-03-10 |
EP4236105A2 (en) | 2023-08-30 |
EP3605867A1 (en) | 2020-02-05 |
US20230397016A1 (en) | 2023-12-07 |
US20200059799A1 (en) | 2020-02-20 |
CN110431758A (zh) | 2019-11-08 |
CN116137545A (zh) | 2023-05-19 |
JP7499822B2 (ja) | 2024-06-14 |
US11483718B2 (en) | 2022-10-25 |
JPWO2018173646A1 (ja) | 2020-01-30 |
CN116170045A (zh) | 2023-05-26 |
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US20230007505A1 (en) | 2023-01-05 |
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